JP7120654B2 - Contaminant separation device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a contaminant removing device for removing contaminants mixed in sugarcane harvested from a field.

In recent years, with the mechanization of sugarcane harvesting, sugarcane is pre-cut to a predetermined length or less by a harvester before being transported to a sugar factory. The sugar cane cut by the harvester contains contaminants such as cane heads, leaf sheaths, dead leaves, roots, soil and stones. Since such contaminants reduce the sugar production yield, an apparatus for removing contaminants from harvested sugarcane has been proposed (see, for example, Patent Document 1).

The removing device of Patent Document 1 has left and right spiral rollers that rotate in opposite directions to each other, and while conveying sugarcane by the rotation of the spiral rollers, contaminants mixed in the sugarcane are drawn between the left and right spiral rollers and removed. is configured as

However, in such a removing device, sugar cane and foreign matter are caught between the spiral roller end portion on the downstream side in the conveying direction and the roller supporting portion, and a phenomenon occurs in which the conveying of the sugar cane is hindered. When such a phenomenon occurs, it becomes necessary to stop the apparatus and remove the sandwiched sugar cane, etc., resulting in a problem of reduced processing efficiency. In addition, there is a problem that the sugar cane is drawn between the pair of spiral rollers and discharged, resulting in a decrease in yield.

JP-A-7-79630

SUMMARY OF THE INVENTION An object of the present invention is to provide a contaminant removing apparatus capable of efficiently removing contaminants mixed in sugar cane.

The contaminant removing device of the present invention is equipped with a plurality of spiral rollers arranged side by side, and is a contaminant removing device that draws and removes contaminants between adjacent spiral rollers while conveying sugar cane in the axial direction of the spiral rollers. A roller main body of the spiral roller is rotatably supported by a roller supporting part that supports the end of the roller shaft on the conveying terminal side, and the roller main body and the roller supporting part , is provided with a discharge part into which the sugar cane can fall.

According to the contaminant removing device of the present invention, the discharging section is provided between the end of the spiral roller on the conveying terminal side of the roller main body and the roller supporting section so that the sugar cane can drop down along the side of the roller shaft. Therefore, it is possible to prevent sugarcane and foreign matter from being caught between the roller body and the roller support. As a result, the contaminant removing apparatus of the present invention can efficiently remove contaminants mixed in the sugarcane.

In the contaminant removing device of the present invention, the rotation shafts of the adjacent spiral rollers are arranged with a vertical shift, and at least three spiral rollers continuous in the arrangement direction of the spiral rollers are concave when viewed from the axial direction. may be arranged in

According to this aspect, the sugarcane and foreign matters put on the spiral roller array enter the space surrounded by the concave spiral rollers, and the longitudinal orientation of the sugarcane is aligned with the axial direction of the spiral rollers. easier to follow. As a result, the sugarcane can be conveyed at a stable speed, and the sugarcane can be stably discharged from the conveying end portion by suppressing the sugarcane from turning sideways at the conveying end portion of the spiral roller.

In the contaminant removing device of the present invention, a gap forming member extending along the spiral rollers may be arranged between the spiral rollers adjacent to each other.

According to this aspect, since the gap forming member prevents the sugarcane from deeply entering between the adjacent spiral rollers, it is possible to prevent the sugarcane from being bitten between the spiral rollers, and to separate contaminants from the sugarcane with a high yield. In addition, damage to sugarcane can be suppressed. Further, if the position of the gap forming member with respect to the spiral roller is adjustable, the size of each gap between the gap forming member and the spiral roller can be easily adjusted. As a result, the size of each gap between the gap forming member and the spiral roller can be easily and appropriately adjusted according to the variety of sugarcane and the ratio of contaminants mixed therein. Contaminants can be separated from the liquid with a good yield.

In the contaminant removing device of the present invention, the rotation shafts of the spiral rollers adjacent to each other are arranged to be vertically shifted, and in the discharge section, at least the roller main body portion of the lower spiral roller and the roller support portion are separated from each other. A space may be provided between them so that the sugar cane can fall.

According to this aspect, the sugar cane conveyed by the plurality of spiral rollers moves to the lower spiral roller side, is conveyed by the lower spiral roller, and is conveyed by the roller body portion of the lower spiral roller. The chances of being discharged from the terminal portion to the discharge portion are increased. Therefore, in the discharge section, at least a gap is provided between the roller main body and the roller support of the lower spiral roller so that the sugarcane can fall between the roller main body and the roller support. In addition, foreign substances can be prevented from being caught, and foreign substances mixed in the sugar cane can be efficiently removed.

Further, the roller body portion of the upper spiral roller may be supported by a second roller support portion provided closer to the conveying start side than the roller support portion.

According to this aspect, since the roller shaft portion of the upper spiral roller on the conveying end side can be shortened, it is possible to suppress sugar cane that is flipped up by the rotation of the spiral roller from being caught in the roller shaft portion of the upper spiral roller. , the sugar cane can be efficiently dropped at the discharge part.

In the contaminant removing device of the present invention, a fall prevention member extending along the roller main body is provided between the adjacent spiral rollers, and the end of the fall prevention member on the conveying terminal side is connected to the roller main body. It may be arranged in the vicinity of the end on the conveying terminal side of the part.

According to this aspect, the fall prevention member can prevent the sugarcane from falling downward from between the adjacent spiral rollers, and the fall prevention member can prevent the sugarcane from hindering the fall of the sugarcane at the discharge section. In the foreign matter removing device of the present invention, a gap forming member extending along the spiral rollers may be arranged between the spiral rollers adjacent to each other.

According to this aspect, the gap forming member can form a gap between the spiral roller and the spiral roller that can draw in contaminants, and prevents the sugarcane from entering deeply between the adjacent spiral rollers. As a result, it is possible to prevent the sugarcane from being caught between the adjacent spiral rollers, to separate foreign substances from the sugarcane with a high yield, and to suppress damage to the sugarcane.

The contaminant removing apparatus of the present invention can efficiently remove contaminants mixed in sugarcane.

1 is a plan view showing a contaminant removing device of one embodiment; FIG. It is a bottom view of the foreign matter removing device. It is a right side view of the foreign matter removing device. It is a left side view of the foreign matter removing device. It is a perspective view of the foreign matter removing device. FIG. 2 is a sectional view taken along the line AA in FIG. 1; 1 is a schematic overall plan view of a sugarcane fermenting system; FIG. It is a schematic plan view showing the periphery of the foreign matter removing device in the same system. It is a schematic side view showing the periphery of the foreign matter removing device in the same system. It is a left view which shows an example of a sugarcane harvester. Fig. 3 is a left side view showing another example of a sugarcane harvester; It is a right view which shows the example of installation of a foreign material removal apparatus. FIG. 4 is a schematic cross-sectional view for explaining another embodiment of the foreign matter removing device; FIG. 10 is a schematic cross-sectional view for explaining still another embodiment of the foreign matter removing device; FIG. 10 is a schematic cross-sectional view for explaining still another embodiment of the foreign matter removing device; It is a schematic plane for describing still another embodiment of the foreign matter removing device.

<First Embodiment of Contaminant Removal Device>
Next, one embodiment of the contaminant removing device will be described based on the drawings. FIG. 1 is a plan view showing a contaminant removing device of one embodiment. FIG. 2 is a bottom view of the contaminant removing device. FIG. 3 is a right side view of the contaminant removing device. FIG. 4 is a left side view of the contaminant removing device. FIG. 5 is a perspective view of the contaminant removing device. FIG. 6 is a sectional view taken along line AA in FIG. In this specification, for the sake of convenience, terms such as front-back and left-right are used to specify directions, but these front-back and left-right directions are directions perpendicular to the front-back direction in the horizontal plane, with the sugarcane conveying direction as the front-back direction. is the left-right direction.

The contaminant removing device 1 of this embodiment includes a plurality of spiral rollers 2A to 2D arranged in parallel, and contaminants are removed between the adjacent spiral rollers while conveying the sugar cane S in the axial direction of the spiral rollers 2A to 2D. It pulls in and removes. The contaminant removing device 1 includes a plurality of spiral rollers 2A to 2D arranged in parallel extending in the conveying direction (front-rear direction) of the sugarcane S, and a driving mechanism 4 for rotating the adjacent spiral rollers 2A to 2D in mutually opposite directions. and In addition, in the following description, a "spiral roller" is also simply called a "roller."

Adjacent rollers 2A and 2B are arranged such that their rotation axes X are shifted in the horizontal direction (horizontal direction) and the vertical direction (vertical direction). That is, the rotation axis X of the upper roller 2A is arranged at a position obliquely above the rotation axis X of the lower roller 2B. Similarly, the adjacent rollers 2C and 2D are arranged such that their rotation axes X are shifted horizontally and vertically, and the rotation axis X of the upper roller 2C coincides with the rotation axis X of the lower roller 2D. It is positioned diagonally above the

The drive mechanism 4 rotates the rollers 2A and 2B so that the directions of rotation of the surfaces facing each other are obliquely downward, and rotates the rollers 2C and 2D so that the directions of rotation of the surfaces facing each other are obliquely downward. It is configured. That is, the rollers 2A to 2D remove foreign matter such as cane heads, leaf sheaths, dead leaves, roots, soil and stones mixed in the sugarcane S thrown onto the rollers 2A to 2D between the rollers 2A and 2B and between the rollers 2C and 2D. It is configured to be drawn in and dropped downward. The sugarcane S fed onto the rollers 2A to 2D is cut by a harvester, a cutter, or the like.

As shown in FIG. 6 and the like, in the present embodiment, the rotation axis X of the upper roller 2A is obliquely to the upper left with respect to the rotation axis X of the lower roller 2B when viewed from the conveying end side (rear side) of the sugarcane S. , and the rotation axis X of the upper roller 2C is arranged obliquely to the upper right with respect to the rotation axis X of the lower roller 2D. In other words, a straight line passing through the rotation axes X of the rollers 2A and 2B and a straight line passing through the rotation axes X of the rollers 2C and 2D are opposite to each other with respect to the vertical direction when viewed from the end of the sugarcane S conveyance. , and intersect each other.

Two sets of rollers 2A and 2B and two sets of rollers 2C and 2D are provided alternately in the horizontal direction in the contaminant removing device 1 of the present embodiment. In this embodiment, the lower roller 2B of the rollers 2A and 2B and the lower roller 2D of the rollers 2C and 2D are arranged adjacent to each other at approximately the same height, and the four rollers 2A to 2D are shafts. Two sets of structures arranged in a concave shape when viewed from the direction are arranged on the left and right. In the center of the arrangement of the rollers 2A to 2D in the horizontal direction, the upper roller 2A of the rollers 2A and 2B and the upper roller 2C of the rollers 2C and 2D are arranged adjacent to each other at substantially the same height position. .

The drive mechanism 4 rotates the adjacent rollers 2A to 2D in directions opposite to each other, rotates the rollers 2A and 2B so that the directions of rotation of the surfaces facing each other are obliquely downward, and rotates the rollers 2C and 2D so as to face each other. Rotate so that the rotation direction of the surface is diagonally downward. Therefore, in the contaminant removing device 1, the upper rollers 2A and 2C and the lower rollers 2B and 2D, which are arranged adjacent to each other at approximately the same height, are arranged such that the directions of rotation of the surfaces facing each other are upward. rotate to

In this embodiment, a total of eight rollers 2A to 2D are arranged alternately. can be set.

As shown in FIGS. 1 to 6, each of the rollers 2A to 2D includes a roller shaft portion 21 extending in the front-rear direction, a tubular roller main body portion 22 through which the roller shaft portion 21 is inserted, and an outer circumference of the roller main body portion 22. A spiral protrusion 23 provided on the wall and a pair of front and rear cover portions 24 for fixing both ends of the roller body portion 22 to the roller shaft portion 21 are provided. The roller shaft portion 21, the roller body portion 22, the ridge portion 23, and the lid portion 24 are made of metal, for example.

In the adjacent rollers 2A to 2D, the spiral directions of the ridges 23 are opposite to each other. That is, the spiral directions of the protrusions 23 of the rollers 2A and 2B are opposite to each other. The spiral directions of the ribs 23 of the rollers 2C and 2D are opposite to each other. The ridges 23 of the rollers 2A and 2D have the same helical direction, and the ridges 23 of the rollers 2B and 2D have the same helical direction.

Between the rollers 2A and 2B and between the rollers 2C and 2D, gap forming members 5 extending along the axial direction of the rollers 2A to 2D are arranged. The gap forming member 5 is made of, for example, a metal round bar, and has a cross-sectional dimension (diameter dimension in this embodiment) smaller than the diameter of the rollers 2A to 2D (outer diameter of the ridge portion 23). In addition, the gap forming member 5 is not limited to a round bar, and may be, for example, a square bar having a polygonal cross section.

The gap forming member 5 is provided on the side of the upper roller 2A and above the lower roller 2B with respect to the rollers 2A and 2B. Further, the gap forming member 5 is provided on the side of the upper roller 2C and above the lower roller 2D with respect to the rollers 2C and 2D.

The gap dimension between the rollers 2A to 2D and the gap forming member 5 is set to be smaller than the diameter of the sugarcane S stem. Therefore, the contaminant removing apparatus 1 removes contaminants such as tops of cane and dead leaves mixed in the sugarcane S between the rollers 2A to 2D and the gap forming member 5 while conveying the sugarcane S by rotating the rollers 2A to 2D. It can be separated from the sugar cane S by pulling it in between the rollers 2A and 2B and between the rollers 2C and 2D. Contaminants drawn between the rollers 2A and 2B and between the rollers 2C and 2D fall downward and are collected by the contaminant collecting section 70 arranged below the roller body 22 of the rollers 2A to 2D. Note that the contaminant collection unit 70 may be, for example, a container-like one, or may be configured by a conveyor.

In the contaminant removing device 1 of this embodiment, the rollers 2A and 2B are arranged with their rotation axes X shifted vertically, and the rollers 2C and 2D are also arranged with their rotation axes X shifted vertically. . As a result, the sugar cane S put on the rollers 2A to 2D moves above the lower roller 2B or 2D, and the longitudinal direction of the sugar cane S can be aligned with the axial direction of the rollers 2A to 2D. The transport speed of the sugarcane S is stabilized, and the sugarcane S is prevented from turning sideways at the transport terminal end of the rollers 2A to 2D, so that the sugarcane S can be stably discharged from the transport terminal end. Contaminants mixed in the sugar cane S are pulled downward between the rollers 2A and 2B and between the rollers 2C and 2D by the rotation of the rollers 2A to 2D.

In this embodiment, when viewed from the axial direction of the rollers 2A to 2D, a straight line Y1 passing through the rotation axis X of the rollers 2A and 2B and a straight line Y2 passing through the rotation axis X of the rollers 2C and 2D intersect in a V shape. The lower rollers 2B and 2D are arranged adjacent to each other, and the rollers 2A to 2D are arranged in a concave shape when viewed from the axial direction. Therefore, the sugarcane S and the foreign matter put on the rollers 2A to 2D enter the space surrounded by the concavely arranged rollers 2A to 2D, and the longitudinal posture of the sugarcane S changes to the axial direction of the rollers 2A to 2D. Along with being easier to follow, the chances of contaminants being drawn between the rollers 2A, 2B and between the rollers 2C, 2D increase, so that contaminants can be separated from the sugarcane S with a high yield.

In addition, the sugar cane S that has entered the space surrounded by the rollers 2A to 2D arranged in a concave shape and entered between them is conveyed by the conveying force of the four rollers 2A to 2D, so that it does not remain on the rollers 2A to 2D. , is well transported.

In addition, in the contaminant removing device 1, since the sugarcane S is easily moved above the lower rollers 2B and 2D, the sugarcane S is positioned between the rollers 2A and 2B and between the rollers 2C and 2D. can shorten the time spent in As a result, the contaminant removing apparatus 1 can shorten the time during which the spaces between the rollers 2A and 2B and between the rollers 2C and 2D are blocked by the sugarcane S, so that contaminants can be removed between the rollers 2A and 2B and between the rollers 2C and 2D. It can be easily drawn into the sugar cane S, and foreign matter can be separated from the sugar cane S with a high yield.

As shown in FIG. 6 and the like, the gap forming members 5 arranged between the rollers 2A and 2B and between the rollers 2C and 2D prevent the sugarcane S from entering deeply between the rollers 2A and 2B and between the rollers 2C and 2D. To prevent. As a result, the sugarcane S can be prevented from being caught between the rollers 2A and 2B and between the rollers 2C and 2D.

Further, the gap forming member 5 arranged between the rollers 2A and 2B is arranged so as to enter the rotation axis X side of the rollers 2A and 2B from the common tangential line of the rollers 2A and 2B. Therefore, while arranging the gap forming member 5 so as not to protrude to the side opposite to the rotation axis X with respect to the common tangent line of the rollers 2A and 2B, or while reducing the size of the gap formation member 5 protruding to the side opposite to the rotation axis X, , a gap of a desired size can be formed between the gap forming member 5 and the rollers 2A and 2B. As a result, it is possible to prevent the gap forming member 5 from hindering the movement of the sugarcane S and the foreign matter in the left-right direction (the direction perpendicular to the rotation axis X), so that the sugarcane S and the foreign matter are positioned between the rollers 2A and 2B. Since the chances are increased, the chances of foreign substances being drawn between the rollers 2A and 2B can be increased, and the foreign substances can be separated from the sugarcane S with a high yield.

Similarly, the gap forming member 5 arranged between the rollers 2C and 2C is arranged so as to enter the rotation axis X side of the rollers 2C and 2D from the common tangential line of the rollers 2C and 2D. Therefore, it is possible to increase the chances that the sugarcane S and foreign substances are drawn between the rollers 2C and 2D, so that the foreign substances can be separated from the sugarcane S with a high yield.

In this embodiment, the gap forming member 5 is arranged so as not to protrude to the side opposite to the rotation axis X with respect to the common tangent line of the rollers 2A, 2B or the rollers 2C, 2D. It may protrude from the common tangent line of 2B or the rollers 2C and 2D to the side opposite to the rotation axis X.

Further, in the present embodiment, a gap forming member 5 is arranged between the rollers 2A and 2B and between the rollers 2C and 2D to form a gap smaller than the stalk diameter of the sugarcane S between the rollers 2A to 2D. Thus, the dimension between the rollers 2A and 2B and the dimension between the rollers 2C and 2D can be increased. Therefore, clogging of contaminants between the rollers 2A and 2B and between the rollers 2C and 2D can be prevented.

Further, by making the position of the gap forming member 5 adjustable with respect to the rollers 2A to 2D, the size of each gap between the gap forming member 5 and the rollers 2A to 2D can be easily adjusted. As a result, the size of each gap between the gap forming member 5 and the rollers 2A to 2D can be easily and appropriately adjusted according to the variety of sugarcane S and the ratio of contaminants mixed therein, improving versatility. At the same time, impurities can be separated from the sugarcane S with a high yield.

Further, the gap forming member 5 is provided so as not to rotate in conjunction with the rotation of the rollers 2A to 2D. In this embodiment, the gap forming member 5 is non-rotatably fixed. As a result, the force that draws the sugarcane S between the rollers 2A and 2B or between the rollers 2C and 2D (each gap between the rollers 2A to 2D and the gap forming member 5) is Rotational force only. On the other hand, in the configuration in which the gap forming member 5 is not arranged, the force to pull the sugar cane S between the rollers 2A and 2B or between the rollers 2C and 2D is the rollers 2A and 2B or the rollers 2C and 2D. Therefore, by arranging the gap forming member 5, the force for drawing the sugar cane S between the rollers 2A and 2B and between the rollers 2C and 2D can be reduced compared to the structure in which the gap forming member 5 is not arranged. , the sugarcane S can be prevented from being caught between the rollers 2A to 2D and the gap forming member 5, contaminants can be separated from the sugarcane S with a high yield, and damage to the sugarcane S can be suppressed.

As shown in FIG. 6 and the like, between the upper rollers 2A and 2C adjacent to each other at the center in the arrangement direction (horizontal direction) of the rollers 2A to 2D, there is a first gap that closes the gap between the upper parts of the rollers 2A and 2C. A padding member 6 is provided. Between the upper rollers 2A and 2C located at both ends in the arrangement direction of the rollers 2A to 2D and the lateral scattering prevention members described later, the gaps between the rollers 2A and 2C and the lateral scattering prevention members are closed. A second gap filling member 7 is provided. The first gap-filling member 6 and the second gap-filling member 7 are composed of, for example, metal round bars, are arranged to extend along the axial direction of the rollers 2A to 2D, and have cross-sectional dimensions (in the present embodiment, diameter dimension) is smaller than the diameter of the rollers 2A to 2D (the outer diameter of the ridge portion 23).

The first gap-filling member 6 and the second gap-filling member 7 prevent the sugarcane S from falling from between the rollers 2A and 2C or from between the horizontal scattering prevention member and the rollers 2A and 2C. In addition, the first gap filling member 6 and the second gap filling member 7 prevent the sugar cane S and foreign matter from entering between the rollers 2A and 2C or between the lateral scattering prevention portion 55 and the rollers 2A and 2C. , the sugarcane S and foreign matter are made easy to drop to the lower rollers 2B and 2D. As a result, the sugarcane S and contaminants can easily come into contact with the rollers 2A to 2D at positions between the rollers 2A and 2B and between the rollers 2C and 2D, so that the contaminants can be separated from the sugarcane S with a high yield.

In addition, since the upper rollers 2A and 2C are arranged at the ends of the arrangement direction of the rollers 2A to 2D, the sugarcane S placed between the rollers 2A and 2C and the second gap filling member 7 is placed on the lower side. It is configured to easily drop to the rollers 2B and 2D side of the. This prevents the sugarcane S from staying between the rollers 2A, 2C and the second gap filling member 7, and the sugarcane S can be conveyed satisfactorily. Note that this embodiment does not exclude the configuration in which the lower rollers 2B and 2D are arranged at the ends in the arrangement direction of the rollers 2A to 2D.

As shown in FIGS. 1 to 6, a fall prevention member 8 is arranged between the adjacent lower rollers 2B and 2D to prevent the sugarcane S from falling from between the rollers 2B and 2D. In the present embodiment, the fall prevention member 8 is made of, for example, a plate-like member made of metal, and is provided along the roller body portions 22 of the rollers 2B and 2D. The upper end of the fall prevention member 8 is arranged at a position slightly above the rotation axis X of the rollers 2B and 2D. The fall prevention member 8 can prevent the sugarcane S and foreign matter from getting stuck between the rollers 2B and 2D and the sugarcane S from falling downward from between the rollers 2B and 2D.

As described above, the rollers 2B and 2D are driven by the driving mechanism 4 so that the rotation directions of the surfaces facing each other are directed upward. Raised. As a result, the sugarcane S and contaminants are more likely to come into contact with the rollers 2A to 2D between the rollers 2A and 2B and between the rollers 2C and 2D, so that the contaminants can be separated from the sugarcane S with a high yield.

As shown in FIGS. 1 to 6, both ends of the roller shafts 21 of the rollers 2A to 2D are attached to the rear roller support portion 61 and the front roller support portion 62 provided on the frame portion 11 of the contaminant removing device 1. It is rotatably supported via bearings 63 . The rear roller support portion 61 and the front roller support portion 62 are made of steel, for example. Both ends of the roller shaft portion 21 are supported by the rear roller support portion 61 and the front roller support portion 62, and bearings provided at both ends of the rollers 2A to 2D are rotatably supported on the roller shaft portion 21. Also, the roller main body 22 may be rotatably provided with respect to the rear roller support 61 and the front roller support 62 .

The rear end portions of the roller bodies 22 of the rollers 2A to 2D (the end portions on the conveying end side of the sugarcane S) are spaced apart from the rear roller support portion 61 so that the sugarcane S can fall. . A gap between the rear end portion of the roller body portion 22 and the rear roller support portion 61 constitutes a discharge portion 64 .

In this embodiment, a gap larger than the length of the sugar cane S cut into a length equal to or less than a predetermined length is provided between the rear end portion of the roller main body portion 22 and the rear roller support portion 61. . On the other hand, the front ends of the roller main bodies 22 of the rollers 2A to 2D (ends on the transport start end side of the sugar cane S) are arranged close to the front roller support portion 62 .

The sugarcane S put on the rollers 2A to 2D at a position near the front roller support portion 62 is conveyed on the rollers 2A to 2D while being freed from foreign matter, and when it reaches the rear end portion of the roller body portion 22, it is discharged. At a portion 64, it passes between the roller shaft portions 21 of the rollers 2A to 2D and falls downward. In this manner, a gap is provided between the front end portion of the roller body portion 22 and the rear side roller support portion 61 so that the sugar cane S can drop. It is possible to prevent clogging of the sugarcane S and foreign matters with the side roller supporting portion 61, thereby improving working efficiency. The sugarcane S dropped from the discharge section 64 is transported by the sugarcane recovery section 71 arranged below the discharge section 64 . In addition, the sugarcane recovery part 71 may be, for example, a container-like one, or may be configured by a conveyor.

As shown in FIGS. 1 to 6, the frame portion 11 includes four vertical frames 51, a frame-shaped upper frame 52 connected to the upper ends of the vertical frames 51, and left and right vertical frames 51 connecting the front and rear vertical frames 51. It is provided with front and rear horizontal rail frames 53 and left and right horizontal rail frames 54 connecting intermediate portions of the left and right front and rear horizontal rail frames 53 to each other. The rear roller support portion 61 is connected to the left and right vertical frames 51 and the upper frame 52 on the rear side. The front roller support portion 62 is connected to the left and right vertical frames 51 and the upper frame 52 on the front side.

The drop prevention member 8 arranged between the lower rollers 2B and 2D is provided along the roller body portion 22 of the rollers 2B and 2D, and the roller body of the rollers 2B and 2D is provided at the lower end of the drop prevention member 8. A horizontal plate-shaped support member 9 extending along the portion 22 is fixed. The fall prevention member 8 and the support member 9 have an inverted T shape when viewed from the longitudinal direction. An inverted T-shaped plate-like connecting member 10 is fixed to the front end surfaces of the fall prevention member 8 and the support member 9, and the front end portions of the fall prevention member 8 and the support member 9 are connected to the front roller support portion via the connection member 10. 62 is detachably fixed.

The rear end portions of the fall prevention member 8 are arranged between the rear end portions of the roller main body portions 22 of the rollers 2B and 2D, and are arranged below the rear end portions of the roller main body portions 22 of the rollers 2A to 2D. It is supported by the crosspiece frame 54 via the support member 9 . That is, the fall prevention member 8 is arranged with a gap larger than the length of the sugarcane S in the conveying direction of the sugarcane S from the rear roller support portion 61 , and the discharge portion 64 is provided with the fall prevention member 8 . not As a result, the fall prevention member 8 does not prevent the sugarcane S from falling from between the roller shafts 21 of the rollers 2A to 2D, and the sugarcane S falls from between the roller bodies 22 of the rollers 2B and 2D. can prevent it from happening.

As shown in FIGS. 1 to 6, the upper frame 52 is provided with left and right lateral scattering prevention portions 55 across the arrangement of the rollers 2A to 2D in plan view. The lateral scattering prevention unit 55 is made of, for example, a metal plate, and can return the sugar cane S that has been thrown up by the rotation of the rollers 2A to 2D onto the rollers 2A to 2D. As a result, the sugarcane S moving on the rollers 2A to 2D can be prevented from scattering to the outside of the contaminant removing apparatus 1. FIG. In the present embodiment, the lateral scattering prevention portion 55 is provided so as to stand substantially vertically, but it may be inclined so that the upper end portion side is located laterally outside the lower end portion side.

The upper frame 52 is also provided with a rear anti-scattering portion 56 arranged above the rear ends of the rollers 2A to 2D (above the rear roller support portion 61 in this embodiment). The rear scattering prevention section 56 is made of, for example, a metal plate, and prevents the sugar cane S that is thrown up by the rotation of the rollers 2A to 2D from the discharge section 64 (the front end portions of the roller bodies 22 of the rollers 2A to 2D and the rear rollers). support portion 61). As a result, the sugarcane S moving on the rollers 2A to 2D can be prevented from scattering to the outside of the contaminant removing apparatus 1. FIG. In the present embodiment, the rear anti-scattering portion 56 is erected in a substantially vertical direction, but is inclined so that the lower end side is located forward (the discharge portion 64 side) from the upper end side. may be

As shown in FIGS. 1 to 6, the driving mechanism 4 rotates the rollers 2A to 2D, and rotates output from a driving source 41, such as an electric motor, through a pulley 42, a belt 43, a relay shaft 44 and a chain. 45, etc., to gears 46 fixed to respective one ends (front ends in this embodiment) of the roller shaft portions 21 of the rollers 2A to 2D. The rotation speed of the drive source 41 is provided so as to be controllable by a control device (not shown). The configuration of the driving mechanism 4 for rotationally driving the rollers 2A to 2D is not limited to that of the present embodiment, and any configuration may be employed as long as the configuration is capable of rotationally driving the rollers 2A to 2D.

<System>
Next, a sugarcane fermenting system to which the contaminant removal device 1 of the embodiment is applied will be described. FIG. 7 is a schematic overall plan view of the sugarcane fermenting system. FIG. 8 is a schematic plan view showing the periphery of the contaminant removing device 1. FIG. FIG. 9 is a schematic side view showing the periphery of the contaminant removing device 1. FIG.

The sugarcane fermenting system 100 includes a hopper 101 that stores sugarcane S that has been cut to a predetermined length or less by a harvester. The sugarcane S is sequentially supplied from a hopper 101 through a feeder 102 to a trommel 103 that removes contaminants mixed in the sugarcane S.

The trommel 103 has a cylindrical rotating body into which the sugarcane S is put, and this rotating body is inclined at a predetermined angle so that the discharge side of the sugarcane S is lower. A plurality of blades parallel to the discharge direction of the sugarcane S are provided on the inner peripheral surface of the rotating body, and the sugarcane S is brought into contact with the blades to strip the leaf sheaths and dead leaves.

The contaminants removed by the trommel 103 are discharged to the trash discharge field 106 by the wind force of the first blower 104 and the second blower 107 . The first blower 104 blows air from the entrance side of the trommel 103 toward the discharge port side to blow off foreign substances in the trommel 103 toward the trash discharge area 106 . The second blower 107 blows air from below the trommel 103 toward the discharge port, and blows off foreign matter discharged from the trommel 103 toward the trash discharge site 106 .

The sugarcane S from which foreign substances have been removed by the trommel 103 is sent to the foreign substance removing device 1 via the feeding device 108 . The contaminant removing apparatus 1 has a configuration similar to that shown in FIGS. 1 to 6, and the sugar cane S is fed from the feeding device 108 onto the rollers 2A to 2D. As shown in FIG. 9, in the present embodiment, the contaminant removing device 1 is arranged at an angle so that the transport end side of the rollers 2A to 2D is lower than the transport start end side. The contaminant removal device 1 removes contaminants mixed in the sugarcane S while conveying the sugarcane S on rollers 2A to 2D.

The sugarcane S conveyed by the foreign matter removing device 1 is sent to the feeding device 110 . As shown in FIGS. 8 and 9, one end of the feeding device 110 is arranged below the end of the contaminant removing device 1 in the sugarcane conveying direction. The sugarcane S conveyed on the rollers 2A to 2D of the contaminant removing device 1 drops onto the feeding device 110 from the discharge section 64 between the roller main body 22 and the rear roller support section 61 .

On the other hand, the contaminants such as the tops of the treetops drawn between the rollers 2A and 2B and between the rollers 2C and 2D of the contaminant removing device 1 are removed. It is accommodated in the article recovery section 70 .

The sugarcane S discharged from the contaminant removing apparatus 1 is sent to the bagging section 114 via the feeding device 110, where it is bagged and loaded onto the bed of a truck by a crane (not shown). The two packaging frames 117, 117 are provided with bags 116, 116 inside, and, for example, as shown in FIG. there is

Since the sugarcane fermenting system 100 includes the contaminant removal device 1 in the conveying route of the sugarcane S, contaminants can be satisfactorily removed from the sugarcane S, and the trash rate of the sugarcane S transferred to the feeding device 110 (contaminant mixing rate) can be greatly reduced by the foreign matter removing device 1. It should be noted that the sugarcane fermenting system to which the contaminant removing apparatus of the present invention can be applied is not limited to the above system.

<Harvester>
Next, a sugarcane harvester equipped with the contaminant removing device of the above embodiment will be described with reference to FIG. 10 and the like. FIG. 10 is a left side view of the sugar cane harvester. In the following description, the left side in the forward direction of the traveling body is simply referred to as the left side, and the right side in the forward direction is simply referred to as the right side.

The sugarcane harvester 200 includes a crawler-type traveling device 201 and a body frame 202 supported on the traveling device 201 . An engine 220 as a drive source is arranged in the upper part of the body frame 202 in the front-rear direction central portion. A control section 230 is provided on the body frame 202 in front of the engine 220 . Note that the travel device 201 may be of a wheel type.

A pair of left and right crop dividers 204 are attached to the front portion of the body frame 202 via an adjustment mechanism 203 . By driving the crop divider 204, the sugar cane in the field is pulled up into the machine. The crop divider 204 is adjustable in height by the adjustment mechanism 203 .

A rake rotor 207 , a base cutter 208 , and a front transport device 209 are supported by a front transport frame 210 behind the crop divider 204 . The rear portion of the front transport frame 210 is rotatably supported by the center portion of the body frame 202 in the front-rear direction. A hydraulic cylinder (not shown) is provided between the front portion of the front transfer frame 210 and the body frame 202 . The extension and contraction of the hydraulic cylinder vertically rotates the front portion of the front conveying frame 210 , thereby making it possible to adjust the heights of the base cutter 208 and the scraping rotor 207 .

When sugarcane is harvested, the raking rotor 207 rotates to rake in the culm of the sugarcane, and the base of the sugarcane is cut by the rotation of the cutting edge of the base cutter 208, and at the same time, the rotation of the helical portion cuts the lower end (root) of the culm. is jumped up. The kicked-up sugar cane is drawn into the front conveying device 209 arranged behind it from the root and is conveyed rearward by the feed rollers 209a of the front conveying device 209 .

The rear part of the front transport device 209 is arranged in the lower front part of the rear transport device 211 . It has a lower conveyor 211a and an upper conveyor 211b. The sugarcane cut by the base cutter 208 is conveyed rearward by the front conveying device 209, and then transferred to the rear conveying device 211 and conveyed obliquely backward and upward.

A chopping device 212 is provided at the rear of the rear transport device 211 . The chopping device 212 includes a pair of upper and lower cutters 212a and a pair of upper and lower bouncing rollers 212b. The sugarcane conveyed by the rear conveying device 211 is cut when the sugarcane passes between the upper and lower cutters 212a. The cut sugar cane is bounced off by the ejecting roller 212b and sent obliquely backward and upward.

A wind selection device 214 is arranged behind the chopping device 212 . The air selection device 214 includes a blower case 214a and a blower 214b arranged in the blower case 214a. The blower case 214a is open at the bottom and the top. The bottom opening communicates with the chopping device 212, and the top opening serves as a discharge port for sugar cane leaves, dust, and the like. The blower case 214a is rotatable around an axis extending in the vertical direction, and the rotation can change the discharge direction. Rotational driving of the blower 214b generates a high-speed air flow from the lower side to the upper side, sucking sugarcane leaves, dust, etc. upward and discharging them sideways or rearward. Heavy cane stalks fall below the wind separator 214 .

A contaminant removal device 1 is arranged below the air selection device 214 . The contaminant removing device 1 has the same configuration as that described with reference to FIGS. 1 to 6. FIG. In addition, in FIG. 10, the configuration of the contaminant removing device 1 is shown in a simplified manner.

The contaminant removing device 1 is attached to the body frame 202 so that the roller shafts 21 of the spiral rollers 2A to 2D are along the longitudinal direction of the running body. The portions of the rollers 2A to 2D on the transport start end side (upstream end in the sugarcane transport direction) are arranged below the wind separator 214 . The contaminant removal device 1 conveys the sugarcane received from the air separation device 214 toward the rear side of the traveling body while removing contaminants on the rollers 2A to 2D. The rollers 2A to 2D are rotationally driven by a hydraulic motor (not shown) or the like.

Contaminants such as tree tops and dead leaves discharged below the roller main body 22 through between the roller main bodies 22 of the rollers 2A to 2D are placed under the roller main bodies 22 of the rollers 2A to 2D. A contaminant discharge device 215 for discharging to the side of 200 is arranged. The contaminant discharge device 215 is composed of, for example, a belt conveyor with the conveying direction oriented in the left-right direction.

A box-shaped sugar cane storage section 216 is arranged below the discharge section 64 (the roller shaft section 21 located downstream of the rollers 2A to 2D in the conveying direction) of the contaminant removing device 1 . The sugarcane that has fallen downward from the discharge section 64 of the contaminant removal device 1 is stored in the sugarcane storage section 216 .

Since the sugarcane harvester 200 is equipped with the foreign matter removing device 1 for removing foreign matter mixed in the cut sugarcane, the foreign matter such as the top of the cane mixed in the sugarcane stored in the sugarcane storage section 216 is removed. can be reduced. As a result, it is possible to reduce labor for manually sorting and removing contaminants such as tops of cane from sugar cane in sugar factories, defoliation facilities, and the like.

The sugarcane harvester 200 shown in FIG. 10 accommodates the sugarcane discharged from the contaminant removing device 1 in the sugarcane container 216. However, as shown in FIG. may be loaded onto a transport vehicle such as a truck running side by side by the discharge conveyor 217 .

The sugar cane discharged from the contaminant removing apparatus 1 is dropped into a hopper 219 provided below the discharge conveyor 217 . A lower portion of the discharge conveyor 217 is supported by a swivel base 218 provided at the rear portion of the body frame 202 so as to be rotatable around an axis extending in the vertical direction. The discharge conveyor 217 is rotatable about an axis extending in the vertical direction at its lower portion by means of a hydraulic motor or the like. Thereby, the discharge direction of the discharge conveyor 217 can be changed. The sugarcane harvester to which the foreign matter removing device of the present invention can be applied is not limited to the sugarcane harvester described above, and may be any harvester equipped with a mechanism for cutting sugarcane harvested from a field into a predetermined length. is applicable.

<Another embodiment of foreign matter removing device>
As shown in FIG. 12, the contaminant removing device 1 may be arranged at an angle so that the transfer end side is at a higher position than the transfer start side.

As shown in FIG. 13, the gap forming member 5 and the first gap filling member 6 may not be provided between the rollers 2A to 2D in the configuration shown in FIG. Further, the second gap filling member 7 may not be provided between the rollers 2A, 2C and the lateral scattering prevention portion 55. FIG. A gap between the adjacent rollers 2A to 2D and a gap between the rollers 2A and 2C and the lateral scattering prevention portion 55 are set to be smaller than the diameter of the sugar cane S stem. 6, only one of the gap forming member 5, the first gap filling member 6, and the second gap filling member 7, or a plurality of them, is not provided. It is possible.

In the embodiment shown in FIG. 13, the rollers 2A and 2B are arranged with their rotation axes X offset vertically, and the rollers 2C and 2D are also arranged with their rotation axes X offset vertically. When viewed from above, four rollers 2A to 2D are arranged in a concave shape. Therefore, in the space surrounded by the rollers 2A to 2D, the sugarcane S can be oriented such that its longitudinal direction is aligned with the axial direction of the rollers 2A to 2D. The sugarcane S can be stably discharged from the conveying end portion by suppressing the sugarcane S from turning sideways at the conveying end portion. Contaminants mixed in the sugar cane S are pulled downward between the rollers 2A and 2B and between the rollers 2C and 2D by the rotation of the rollers 2A to 2D.

As shown in FIG. 14, the rollers 2A and 2B may be arranged alternately, and the rotation axis X may be shifted vertically between the adjacent rollers 2A and 2B. In this modified example, a gap forming member 5 is arranged between the rollers 2A and 2B whose adjacent facing surfaces rotate diagonally downward, and the rollers 2A and 2B whose adjacent opposed surfaces rotate diagonally upward. A first gap filling member 6 is arranged between them.

In this embodiment, since the three rollers 2A, 2B, 2A that are continuous in the arrangement direction of the rollers 2A, 2B are arranged in a concave shape when viewed from the axial direction, the sugarcane S is arranged in the three rollers 2A, 2B, By entering the space surrounded by 2A, the posture of the sugarcane S can be set such that its longitudinal direction is along the axial direction of the rollers 2A to 2D. As a result, the transport speed of the sugarcane S is stabilized, and the sugarcane S can be stably discharged from the transport end portion by suppressing the sugarcane S from turning sideways at the transport end portion of the rollers 2A to 2D.

In the embodiment shown in FIG. 13 or 14, three or four rollers continuous in the roller arrangement direction are arranged concavely when viewed from the axial direction. Five or more rollers may be arranged in a concave shape.

As shown in FIG. 15, a plurality of rollers 2A and 2C having different spiral directions may be arranged substantially horizontally when viewed from the axial direction. The end portions of the roller bodies 22 of the rollers 2A and 2C on the conveying end side are connected to the rear roller support portions 61 (see FIGS. 1 to 6) in the same manner as in the embodiment described with reference to FIGS. are spaced apart to allow the sugarcane to fall, preventing sugarcane and foreign matter from being caught between the rollers 2A and 2C and the rear roller support portion 61.例文帳に追加

As shown in FIG. 16, the roller bodies 22 of the upper rollers 2A and 2C are rotatably supported by a second roller support portion 65 provided closer to the transport start side than the rear roller support portion 61. You can let it be. The second roller support portion 65 is a support member 66 that is installed between the rear roller support portion 61 and the left and right cross frame 54 along the axial direction of the rollers 2A to 2D at a position lower than the rollers 2A and 2D. supported by The support member 66 is composed of, for example, a metal square pipe. Note that the support member 66 may be installed between the rear roller support portion 61 and the front roller support portion 62 .

According to this embodiment, since the roller shafts 21 of the upper rollers 2A and 2C on the conveying end side can be shortened, the sugarcane flipped up by the rotation of the rollers 2A to 2D can reach the roller shafts of the upper rollers 2A and 2C. 21, and the sugar cane can be efficiently dropped at the discharge part 64.例文帳に追加

In addition, in the embodiment shown in FIG. 16 , the end portions of the first gap filling member 6 and the second gap filling member 7 on the conveying terminal side are supported by the second roller supporting portion 65 . As a result, the sugar cane can be prevented from being caught by the first gap filling member 6 and the second gap filling member 7 in the discharge portion 64, and the sugar cane can be dropped efficiently.

In the embodiment shown in FIG. 16, the end portions of the roller shaft portions 21 of the rollers 2A and 2C on the conveying terminal side are rotatably supported by the bearings 67 provided in the second roller support portion 65 . The end portions of the roller shaft portions 21 of the rollers 2A and 2C on the conveying terminal side are fixed to the second roller support portions 65, and the roller main body portions 22 are attached to the roller shaft portions 22 via bearings provided at the end portions of the roller main body portions 22. It may be rotatably supported by the portion 21 . In addition, by fixing a cylindrical portion to which the roller shaft portion 21 is fitted to the end portion of the roller main body portion 22 on the conveying start end side and supporting the cylindrical portion on the front side roller support portion 62 so as to be rotatable, the roller main body portion 22 can be rotatably supported. By rotating a power transmission member such as a gear fixed to the cylinder, the roller main body 22 can be rotationally driven through the cylinder. The configuration in which the roller main body 22 is rotatably supported by the roller shaft 21 provided so as not to rotate can be applied to any of the above-described embodiments.

It is also possible to combine the configuration of the embodiment described with reference to FIGS. 1 to 6 and the configuration of each embodiment shown in FIGS. 13 to 16. FIG.

In the above embodiment, the adjacent spiral rollers are rotated in opposite directions. Alternatively, all spiral rollers may rotate in the same direction. Moreover, the number of spiral rollers arranged side by side may be two or more.

Further, in the above-described embodiment, the spiral directions of the ridge portions of the adjacent spiral rollers are opposite to each other. It may include portions where the direction is the same, or all the spiral rollers may have the same spiral direction of the ridges.

Although the embodiments have been described above, the present invention is not limited to the above-described embodiments, and can be embodied in various aspects. The configuration of each part is not limited to the illustrated embodiment, and each configuration described in the above-described embodiment and modifications (such as the above notes) may be combined without departing from the spirit of the present invention. In addition, additions, omissions, substitutions, and other changes in configuration are possible.

1 Contaminant removing device 2A Spiral roller 2B Spiral roller 2C Spiral roller 2D Spiral roller 4 Drive mechanism 5 Gap forming member 6 First gap filling member 7 Second gap filling member 8 Fall prevention member 9 Support member 10 Connecting member 11 Frame part 21 Roller shaft 22 Roller main body 23 Ridge 24 Lid 41 Drive source 42 Pulley 43 Belt 44 Relay shaft 45 Chain 46 Gear 51 Vertical frame 52 Upper frame 53 Front and rear horizontal rail frame 54 Left and right horizontal rail frame 55 Horizontal scattering prevention portion 56 Rear scattering prevention part 61 Rear roller support part 62 Front roller support part 63 Bearing 64 Discharge part 65 Second roller support part 70 Contaminant collection part 71 Sugar cane collection part 100 Sugar cane extraction system 101 Hopper 102 Feeding device 103 Trommel 104 First blower 106 Trash discharge area 107 Second blower 108 Feeding device 110 Feeding device 114 Bagging unit 115 Rail 116 Bag 117 Bagging frame 200 Sugarcane harvester 201 Traveling device 202 Body frame 203 Adjusting mechanism 204 Crop divider 207 Raking rotor 208 Base cutter 209 Front conveying device 209a Feeding roller 210 Front conveying frame 211 Rear conveying device 211a Lower conveyor 211b Upper conveyor 212 Chopping device 212a Cutter 212b Roller 214 Wind separator 214a Blower case 214b Blower 215 Contaminant discharging device 216 Sugar cane container 217 Discharge conveyor 218 Turntable 219 Hopper 220 Engine 230 Manipulator S Sugarcane X Rotational axis Y1 Straight line Y2 Straight line

Claims (3)

A contaminant removing device comprising a plurality of spiral rollers arranged side by side, removing contaminants by drawing them between adjacent spiral rollers while conveying sugar cane in the axial direction of the spiral rollers,
the roller main body of the spiral roller is rotatably supported by a roller support that supports the end of the roller shaft on the conveying terminal side,
A contaminant removing device, wherein a discharge section from which sugarcane can drop is provided between the roller body section and the roller support section. The rotating shafts of the adjacent spiral rollers are arranged with a vertical shift,
The contaminant removing device according to claim 1, wherein at least three spiral rollers continuous in the direction of arrangement of the spiral rollers are arranged in a concave shape when viewed from the axial direction. 3. The contaminant removing device according to claim 1, wherein a gap forming member extending along said spiral roller is arranged between said adjacent spiral rollers.

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